BF, no AF, hoping for the first egg...?

Had my son 20 months ago... Gradually weaning (currently down to 1-2 feedings/day, in the evening)... No PP period yet.

Even tho no period yet, cheapie OPKs indicate I have monthly LH “surges” (clear line progression to dark then back to faint/no test line)... My concern is this: even at its darkest, my test line is usually never as dark as the control line.

Questions:

1. Does this mean my “positive” may be lighter than other people, perhaps who don’t BF?

2. Has anyone gotten pregnant with an LH surge (semi-dark) like mine?